Home / 82,582.43-113,973.32-77,515.61

Finding the Fourth Proportional to 82,582.43, 113,973.32 and 77,515.61

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Solution

The fourth proportional to 82,582.43, 113,973.32 and 77,515.61 is: 106,980.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,582.43 : 113,973.32 = 77,515.61 : x
  2. Step 2: Convert to fraction form
    82,582.43/113,973.32 = 77,515.61/x
  3. Step 3: Cross multiply
    82,582.43x = 113,973.32 × 77,515.61
  4. Step 4: Simplify right side
    82,582.43x = 8,834,711,035.95
  5. Step 5: Solve for x
    x = 8,834,711,035.95/82,582.43
  6. Step 6: Final answer
    x = 106,980.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.